... acquire information about friendship relations, we developed an agent that automatically visits the friend-list page of a real user seed profile, and then recursively, acquires friendship relations ... friend-list pages of friends of the seed, and so on, down to the third sub-level of friendship relations Only friendship relations among real users have been acquired, fan pages and companies having ... techniques for automatic wrapper adaptation A slightly modified version of that algorithm, relying on analyzing structural similarities inside the DOM tree structure of Facebook friend-list pages, is...